Display screen or a portion thereof with graphical user interface



The sole FIGURE is a front elevation view of a display screen or a portion thereof with graphical user interface showing my new design.

The short dash-dash broken lines within the FIGURE illustrate unclaimed portions of the graphical user interface and the dot dash broken line around the FIGURE shows the display screen; the broken lines form no part of the claimed design. 

CLAIM I claim, the ornamental design for a display screen or a portion thereof with graphical user interface, as shown and described. 